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EMLA Q.5

0. The rank of a 3 x 3 matrix C (= AB), found by multiplying a non-zero column matrix A of size 3 x 1 and a non-zero row matrix B of size 1 x 3, is

  • Option : B
  • Explanation :
    Let A =
     
    a1
    b1
    c1
    		 
    		; B =
     
    a2 b2 c2
    		 
    		;

    ∴ C =
     
    a1a2   a1b2   a1c2
    b1a2   b1b2   b1c2
    c1a1   c1b2   c1c2
    		 
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